Abstract: Crystals of the compound represented by formula (1), a method for the production thereof, and a method for producing an antibody-drug conjugate using the crystals.

Abstract: The present disclosure provides a fluorine-containing polyether compound having a repeating unit represented by formula (1). In formula (1), n represents an integer of 1 to 8, Ph represents a phenylene group, X1 represents a heterocyclic ring or a hydrocarbon ring, one or both of two phenylene groups represented by Ph, and the heterocyclic ring or hydrocarbon ring represented by X1 are optionally condensed with each other, and the phenylene group, the heterocyclic ring, and the hydrocarbon ring optionally have a substituent.

Abstract: A polybenzimidazole production method for producing the polybenzimidazole including a repeating unit represented by the following formula (1): wherein Rf is —SO2—, —O—, —CO—, an alkylene group optionally containing a substituent, or a group represented by the following formula (a): two Xs are each individually a hydrogen atom or a monovalent organic group; and R1 is a divalent organic group, the production method including a step (1-1) of polymerizing a tetramine compound and a dicarboxylic acid derivative compound to provide a polybenzimidazole precursor polyamide, and a step (1-2) of dehydrocyclizing the polybenzimidazole precursor polyamide.

Abstract: A compound for use as a cross-linking agent represented by the following formula (1) wherein R1 is —SO2—, —O—, —CO—, an optionally substituted alkylene group, a group represented by the following formula (2) or a single bond; and two As are each independently an aromatic ring group containing a 5- or 6-membered aromatic ring and optionally containing a substituent, where the aromatic ring group contains a substituent in the case where the aromatic ring group is a monocyclic aromatic ring group containing a 6-membered aromatic hydrocarbon ring. Also disclosed is a composition containing the cross-linking agent.

Abstract: A composition including a fluorine-containing polymer and a silicon-containing compound, wherein the phosphorus content in the composition is 20 ppm or less. Also disclosed is a molded article obtained from the composition, and a second composition containing a fluorine-containing polymer and a silicon-containing polymer, wherein a content of an amide solvent in the composition is less than 1000 ppm.

Abstract: The present invention provides a method of relocating optical devices onto a carrier substrate in a case where a pixel pitch of a display is not an integer multiple of a pitch of the optical devices arrayed on a sapphire substrate. A moving speed ratio between a donor substrate and a receptor substrate is determined from an array pitch (3, 4) of optical devices (2) formed on the sapphire substrate and an array pitch (5, 7) of optical devices to be transferred onto a carrier substrate (6), and the optical devices are subjected to LIFT (laser transferred) in synchronization with movement of the donor substrate, whereby the optical devices on the sapphire substrate are transferred onto the carrier substrate at an array pitch that is identical to the pixel pitch of the display.

Abstract: A crosslinkable elastomer composition including a crosslinkable elastomer and a surface-oxidized non-oxide ceramic. Also disclosed is a fluoroelastomer molded article having a weight reduction percentage of 2.5% by mass or less and an amount of particles generated of 0.05% by mass or less after O2 plasma irradiation, a weight reduction percentage of 1.8% by mass or less, an amount of particles generated of 0.05% by mass or less after NF3 plasma irradiation, and a compression set of 50% or less after aging at 300° C. for 70 hours.

Abstract: Proposed are a method and an apparatus for transferring devices arranged on a first substrate to a second substrate by using laser light while correcting positional deviations of the devices. The present invention involves: acquiring actual positional information about devices on the first substrate; performing grouping in accordance with a criterion determined on the basis of an allowable positional deviation amount; correcting, for each group unit, a position of the first substrate such that positions of the devices fall into a range of an allowable positional deviation amount; and applying laser light from the back surface of the first substrate and transferring the devices to the second substrate.

Abstract: The present invention aims to provide a laminate in which a fluororesin layer and a fluororubber layer are firmly bonded. The present invention relates to a laminate including: a fluororubber layer (A); and a fluororesin layer (B) stacked on the fluororubber layer (A), the fluororubber layer (A) being formed from a fluororubber composition, the fluororubber composition containing a fluororubber, a low molecular weight polytetrafluoroethylene, and a multifunctional compound, the amount of the multifunctional compound being 5 parts by mass or more relative to 100 parts by mass of the fluororubber.

Abstract: Provided is a fluoropolymer comprising tetrafluoroethylene unit (1) and a monomer unit (2) derived from a perfluoroalkadlene represented by formula (2): CF2?CF(CF2)nCF?CF2 where n represents an integer of 2 to 10, wherein a content of tetrafluoroethylene unit (1) is 98.0 to 99.999 mol % or more based on total monomer units constituting the fluoropolymer, and a content of the monomer unit (2) is 0.001 to 2.0 mol % based on total monomer units constituting the fluoropolymer.

Abstract: A crosslinkable elastomer composition including a crosslinkable elastomer and a surface-oxidized non-oxide ceramic. Also disclosed is a fluoroelastomer molded article having a weight reduction percentage of 2.5% by mass or less and an amount of particles generated of 0.05% by mass or less after O2 plasma irradiation, a weight reduction percentage of 1.8% by mass or less, an amount of particles generated of 0.05% by mass or less after NF3 plasma irradiation, and a compression set of 50% or less after aging at 300° C. for 70 hours.

Abstract: A method for producing a polybenzimidazole precursor polyamide including a repeating unit represented by the following formula (2): wherein Rf is —SO2—, —O—, —CO—, an alkylene group optionally containing a substituent, or a group represented by the following formula: two Xs are each individually a monovalent organic group; and R1 is a divalent organic group, the method including: a step (1-1) of polymerizing a tetramine compound (3) and a dicarboxylic acid derivative compound (4) as defined herein to provide the polybenzimidazole precursor polyamide.

Abstract: A polybenzimidazole production method for producing the polybenzimidazole including a repeating unit represented by the following formula (1): wherein Rf is —SO2—, —O—, —CO—, an alkylene group optionally containing a substituent, or a group represented by the following formula (a): two Xs are each individually a hydrogen atom or a monovalent organic group; and R1 is a divalent organic group, the production method including a step (1-1) of polymerizing a tetramine compound and a dicarboxylic acid derivative compound to provide a polybenzimidazole precursor polyamide, and a step (1-2) of dehydrocyclizing the polybenzimidazole precursor polyamide.

Abstract: A fluorinated amide compound having a specific repeating unit and a fluorinated nitrogen-containing heterocyclic ring-containing compound having a specific repeating unit.

Abstract: An amide compound and a nitrogen-containing heterocyclic ring-containing compound which have a specific repeating unit and a crosslinking site represented by Formula (2): —C?CX1 at a molecular end.

Abstract: A fluorine-containing polybenzimidazole containing a repeating unit represented by the following formula (1): wherein Rf is —SO2—, —O—, —CO—, an alkylene group optionally containing a substituent, or a group represented by the following: wherein two Xs are each individually a hydrogen atom or a monovalent organic group; and R1 is a divalent organic group. Also disclosed is a polybenzimidazole precursor polyamide, a polybenzimidazole production method, film, flexible wiring board, printed circuit board, and polymer electrolyte membrane.

Abstract: The invention provides a fluoroelastomer composition that can be crosslinked at an industrially sufficient rate without the use of a graphene having specific surface properties and can provide a fluoroelastomer molded article having higher tensile strength and better abrasion resistance than conventional fluoroelastomer molded articles even though having a similar tensile modulus to conventional fluoroelastomer molded articles. The fluoroelastomer composition contains a fluoroelastomer that contains a crosslinkable group-containing monomer unit and an elongated sheet-shaped graphene. The graphene exhibits a ratio (L/W) of a maximum length (L) and a width (W) of 2 to 105, and the graphene exhibits a ratio (L/T) of the maximum length (L) and a thickness (T) of 1×101 to 1×107.

Abstract: A method for producing a polybenzimidazole precursor polyamide including a repeating unit represented by the following formula (2): wherein Rf is —SO2—, —O—, —CO—, an alkylene group optionally containing a substituent, or a group represented by the following formula: two Xs are each individually a monovalent organic group; and R1 is a divalent organic group, the method including: a step (1-1) of polymerizing a tetramine compound (3) and a dicarboxylic acid derivative compound (4) as defined herein to provide the polybenzimidazole precursor polyamide.

Abstract: Provided is a fluorine-containing elastomer composition that contains a non-crosslinked fluorine-containing elastomer and a crosslinked perfluororesin.

Abstract: A composition containing a fluorine-containing polymer and a silicon oxide represented by formula: SiOx, where 0<x<2. In a preferred embodiment, the composition contains a cross-linking agent. Also disclosed is a crosslinked product which may be a sealing material obtained by crosslinking the composition.